1. Referring to something which comes or occurs in advance of another thing: Prevenient preparations for the family's camping trip to Canada had to be made, and therefore Mr. Smart had to buy a tent and sleeping bags for the whole family!
2. Concerning something that produces a sense of anticipation; anticipatory: Prevenient excitement at the thought of the first day of vacation was certainly on Betty's mind when she was walking home from her last day of school.